CN117918059A

CN117918059A - Communication control method, system and device, communication equipment and storage medium

Info

Publication number: CN117918059A
Application number: CN202280003241.4A
Authority: CN
Inventors: 毛玉欣
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2024-04-23
Also published as: WO2024040415A1

Abstract

The embodiment of the disclosure provides a communication control method, a system and a device, a communication device and a storage medium, wherein the communication control method is executed by first core network equipment and comprises the following steps: acquiring feeder link information when the feeder link is about to be interrupted (S110); the feeder link information is transmitted to the user equipment UE through the access network device, and is used to determine whether the UE continues to camp on the current network or access other networks (S120).

Description

Communication control method, system and device, communication equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communication technologies, but is not limited to the field of wireless communication technologies, and in particular, to a communication control method, a system, a device, a communication apparatus, and a storage medium.

Background

When a User Equipment (UE) is connected to a Core Network (CN) device through AN Access Network (Access Network) device, for example, a base station (gNB), for example, AN Access Network formed by a satellite, a ground receiving station and a gNB function, the satellite may not be able to maintain a connection with the ground station at any time, that is, a feeder link (FEEDER LINK) is connected, so that a connection interruption of the feeder link may cause AN abnormal UE Access or AN abnormal UE service development.

In the related art, a unified processing manner is often adopted for all associated users under the condition of disconnection of a feeder link, for example, communication of all associated users is interrupted or communication of all associated users is kept, but the processing of the interruption of the feeder link is not flexible enough, which often results in a large amount of data cache to increase network overhead or service interruption to influence service experience.

Disclosure of Invention

The embodiment of the disclosure provides a communication control method, a communication control system, a communication device, a communication control device and a storage medium.

A first aspect of an embodiment of the present disclosure provides a communication control method, performed by a first core network device, the method including:

when the feeder link is about to be interrupted, acquiring feeder link information;

And sending the feeder link information to the UE through access network equipment, wherein the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.

A second aspect of embodiments of the present disclosure provides a communication control method, performed by a UE, the method including:

when the feeder link is about to be interrupted, receiving feeder link information;

and determining to continue to reside in the current network or access other networks according to the feeder link information.

A third aspect of embodiments of the present disclosure provides a communication control method, performed by an access network device, the method including:

and when the feeder link is detected to be about to break, sending feeder link information, wherein the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.

A fourth aspect of the disclosed embodiments provides a communication system comprising: the system comprises first core network equipment, UE and access network equipment;

The first core network device is configured to receive feeder link information sent by the access network device; when a feeder link is about to break, notifying UE that the feeder link is about to break, and sending the feeder link information to the UE through the access network equipment; the feeder link information is used for determining that the UE continues to reside in a current network or is accessed to other networks;

The UE is used for receiving feeder link information sent by the first core network equipment through the access network equipment when the feeder link is about to be interrupted, and determining to continue to reside in the current network or access other networks according to the received feeder link information;

The access network device is configured to send feeder link information to the first core network device when it is detected that the feeder link is about to be broken.

A fifth aspect of an embodiment of the present disclosure provides a communication control apparatus, the apparatus including:

The receiving unit is used for acquiring feeder link information when the feeder link is about to be interrupted;

And the sending unit is used for sending the feeder link information to the UE, and the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.

A sixth aspect of the disclosed embodiments provides a communication control apparatus, the apparatus including:

the receiving unit is used for receiving feeder link information when the feeder link is about to be interrupted;

And the processing unit is used for determining to continue to reside in the current network or access other networks according to the feeder link information.

A seventh aspect of the disclosed embodiments provides a communication control apparatus, the apparatus including:

and the sending unit is used for sending feeder link information when the detection of the impending interruption of the feeder link is detected, wherein the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.

An eighth aspect of the disclosed embodiments provides a communication device, including a processor, a memory, and an executable program stored on the memory and capable of being executed by the processor, where the processor executes the communication control method provided in the foregoing first aspect, second aspect, or third aspect when the executable program is executed by the processor.

A ninth aspect of the presently disclosed embodiments provides a computer storage medium storing an executable program; the executable program, when executed by a processor, can implement the communication control method provided in the foregoing first aspect, second aspect, or third aspect.

According to the technical scheme provided by the embodiment of the disclosure, when a feeder link is about to be interrupted, the feeder link information is acquired; transmitting the feeder link information to User Equipment (UE) through access network equipment; the feeder link information is used to determine whether the UE continues to camp on the current network or access other networks. In this way, by sending feeder link information to the UE, the UE can decide whether to keep camping in the network or access other networks to interrupt communication in the current network in the case of interruption of the feeder link, so that it can be reduced that the UE cannot decide whether to continue to carry out communication according to its own needs due to communication control of the UE by the network side device, and can also decide whether to continue camping in the current network or not based on the feeder link information, thereby improving flexibility of communication control, and reducing poor flexibility of communication due to adoption of a single control strategy for multiple UEs.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of embodiments of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the embodiments of the invention.

Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment;

FIG. 2 is a flow chart illustrating a communication control method according to an exemplary embodiment;

fig. 3 is a schematic diagram of a communication control system according to an exemplary embodiment;

FIG. 4 is a flow chart illustrating a communication control method according to an exemplary embodiment;

FIG. 5 is a flow chart illustrating a communication control method according to an exemplary embodiment;

FIG. 6 is a flow chart illustrating a communication control method according to an exemplary embodiment;

FIG. 7 is a flow chart illustrating a communication control method according to an exemplary embodiment;

FIG. 8 is a flow chart illustrating a communication control method according to an exemplary embodiment;

fig. 9 is a flow chart illustrating a communication control method according to an exemplary embodiment;

fig. 10 is a flow chart illustrating a communication control method according to an exemplary embodiment;

fig. 11 is a schematic structural view of a communication control apparatus according to an exemplary embodiment;

fig. 12 is a schematic structural view of a communication control apparatus according to an exemplary embodiment;

fig. 13 is a schematic structural view of a communication control apparatus according to an exemplary embodiment;

fig. 14 is a schematic diagram showing a structure of a terminal according to an exemplary embodiment;

Fig. 15 is a schematic diagram of a communication device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the invention.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" depending on the context.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: a number of terminals 11 and a number of access devices 12.

Where the terminal 11 may be a device providing voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the terminal 11 may be an internet of things terminal, such as a sensor device, a mobile phone (or "cellular" phone) and a computer with an internet of things terminal, for example, a stationary, portable, pocket, hand-held, computer-built-in or vehicle-mounted device. Such as a Station (STA), subscriber unit (subscriber unit), subscriber Station (subscriber Station), mobile Station (mobile Station), mobile Station (mobile), remote Station (remote Station), access point, remote terminal (remote terminal), access terminal (ACCESS TERMINAL), user device (user terminal), user agent (user agent), user device (user device), or user terminal (user equipment). Or the terminal 11 may be a device of an unmanned aerial vehicle. Or the terminal 11 may be a vehicle-mounted device, for example, a car-driving computer with a wireless communication function, or a wireless communication device externally connected with the car-driving computer. Or the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp, or other roadside devices having a wireless communication function, or the like.

Access device 12 may be a network-side device in a wireless communication system. Wherein the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication,4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; alternatively, the wireless communication system may be a 5G system, also known as a New Radio (NR) system or a 5G NR system. Or the wireless communication system may be a next generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new Generation radio access network). Or an MTC system.

Wherein the access device 12 may be an evolved access device (eNB) employed in a 4G system. Or access device 12 may be an access device (gNB) in a 5G system employing a centralized and distributed architecture. When the access device 12 employs a centralized and distributed architecture, it typically includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A protocol stack of a packet data convergence protocol (PACKET DATA Convergence Protocol, PDCP) layer, a radio link layer Control protocol (Radio Link Control, RLC) layer, and a medium access Control (MEDIA ACCESS Control, MAC) layer is arranged in the centralized unit; a Physical (PHY) layer protocol stack is provided in the distribution unit, and the specific implementation of the access device 12 is not limited by the embodiments of the present disclosure.

A wireless connection may be established between access device 12 and terminal 11 over a wireless air interface. In various embodiments, the wireless air interface is a fourth generation mobile communication network technology (4G) standard-based wireless air interface; or the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or the wireless air interface can also be a wireless air interface based on the technical standard of the next generation mobile communication network of 5G.

Optionally, the above wireless communication system may further include a network management device 13. Several access devices 12 are connected to the network management device 13, respectively. The network management device 13 may be a core network device in a wireless communication system, for example, the network management device 13 may be a Mobility management entity (Mobility MANAGEMENT ENTITY, MME) in an evolved packet core (Evolved Packet Core, EPC). Or the network management device may be other core network devices, such as a service GateWay (SERVING GATEWAY, SGW), a public data network GateWay (Public Data Network GateWay, PGW), a Policy AND CHARGING Rules Function (PCRF), or a home subscriber server (Home Subscriber Server, HSS), etc. The embodiment of the present disclosure is not limited to the implementation form of the network management device 13.

As shown in fig. 2, an embodiment of the present disclosure provides a communication control method, which is executed by a first core network device, including:

S110: when the feeder link is about to be interrupted, acquiring feeder link information;

S120: transmitting feeder link information to the UE through the access network equipment; feeder link information is used to determine whether the UE continues to camp on the current network or access other networks.

In the embodiments of the present disclosure, as shown in fig. 3, the access network may include a plurality of access devices, such as satellite and terrestrial receiving stations, etc. that carry the functions or part of the functions of a base station (gndeb, gNB). The core network may be connected to a ground-based receiving station for establishing a connection with a satellite via the ground-based receiving station. The core network may comprise a plurality of core network devices, e.g. may comprise access and mobility management functions (ACCESS AND Mobility Management Function, AMF), user plane functions (User Plane Function, UPF), session management functions (Session Management Function, SMF) and the like. The first core network device may be an AMF. The feeder link may be a connection link between a satellite for carrying the gNB function or a part of the function and a ground receiving station, and the service link (SERVICE LINK) may be a connection link between a satellite for carrying the gNB function or a part of the function and the UE.

In one embodiment, the feeder link information may indicate at least one of a feeder link status, a parameter, an access network device status of the feeder link connection, an operational parameter, and the like. For example, feeder link information may be used to determine at least one of the following: the method comprises the steps of establishing a feeder link, establishing time, interrupting time and interrupting time.

In one embodiment, the time and/or duration of the interruption of the feeder link may be determined based on the time and/or duration of the establishment of the feeder link, e.g., the time and duration of the interruption of the feeder link may be determined based on the time and duration of the establishment of the feeder link and the historical interruption of the feeder link.

In one embodiment, the impending interruption of the feeder link may be a detection or reception of a message sent by the access network device indicating that the feeder link is impending interruption, for example, a broadcast message sent by the access network device carrying content indicating that the feeder link is impending interruption, etc.

In one embodiment, when the feeder link is about to break, acquiring the feeder link information may include: and receiving feeder link information sent by the access network equipment when receiving a notification indicating that the feeder link is about to be interrupted. The notification indicating that the feeder link is about to be interrupted may be sent to the first core network device by the access network device when the access network device detects that the feeder link is about to be interrupted.

In one embodiment, the feeder link information may be carried in a notification indicating that the feeder link is about to be broken. For example, when a notification indicating that the feeder link is about to be interrupted is received, feeder link information sent by the access network device is acquired in the notification.

In one embodiment, the feeder link information is used for the UE to decide whether to continue camping on the current network when the feeder link is about to break. For example, continuing to camp on the current network may include maintaining a radio resource control (Radio Resource Control, RRC) connection between the UE and the access network device, and may also include the access network device, the second core network device, or the third core network device buffering transmission data associated with the UE. The second core network device may be an SMF, and the third core network device may be a UPF.

In one embodiment, the current network does not continue to reside and other networks may be accessed. For example, the other network may be accessed by initiating a deregistration request to the first core network device of the current network, completing deregistration through the current satellite network, and selecting other available networks to initiate registration, or the other network may be accessed by directly switching to the other available networks.

In one embodiment, the feeder link information is sent to the UE, and the feeder link interruption time indicated by the feeder link information may be sent to the UE, where the feeder link interruption time is used to determine that the UE continues to reside in the current network or accesses other networks. For example, the feeder link disruption duration may be used to determine with the UE's current traffic type that the UE continues to camp on the current network or access other networks.

For example, the service currently developed by the UE is a non-real-time service, for example, the maximum time delay allowed by the service type is greater than the feeder link interruption duration, and it may be determined that the UE continues to reside in the current network; the service currently developed by the UE is a real-time service, for example, the service type may determine that the UE chooses to access other networks when the feeder link is interrupted, and so on.

In this way, by sending the feeder link information to the UE, the UE can decide whether to keep residing in the network or select to access to other networks in the case of the interruption of the feeder link, so that the flexibility of communication control can be improved, and the network overhead can be reduced.

In one embodiment, acquiring feeder link information may include: and inquiring feeder link information corresponding to the access network equipment associated with the UE. For example, feeder link information may be acquired from an access network device, or may also be acquired from a ground receiving station or server, or the like.

In some embodiments, acquiring feeder link information may include: and receiving feeder link information sent by the access network equipment.

The feeder link information sent by the access network device may be feeder link information sent by the access network device alone, or may also be feeder link information sent in a request or a message carried by the access network device.

As shown in fig. 4, an embodiment of the present disclosure provides a communication control method, which is executed by a first core network device, including:

s130: when the feeder link is about to be interrupted, receiving feeder link information sent by the access network equipment through a connection release request; the connection release request indicates that the feeder link is about to be interrupted;

s140: transmitting feeder link information to the UE through the access network equipment; feeder link information is used to determine whether the UE continues to camp on the current network or access other networks.

In the disclosed embodiments, the connection release request may be used to request release of a connection between the access network device and the first core network device, for example to request release of an N2 connection. The connection release request may be a request sent by the access network device when the access network device detects that the feeder link is about to break, so as to facilitate quick release of the communication connection between the access network device and the core network device when the feeder link is broken.

In one embodiment, the connection release request may request release of UE context stored in the access network device. When the first core network device returns a connection release instruction to the access network device in response to the connection release request, the access network device may release the UE context, thereby releasing the N2 connection between the first core network device associated with the UE corresponding to the UE context and the access network device.

In one embodiment, a cause value may be carried in the connection release request, where the cause value may indicate the cause of the request to release the N2 connection. The connection release request indicates that the feeder link is about to be broken, and the cause value carried by the connection release request may indicate that the N2 connection release is triggered by the feeder link break.

In one embodiment, the connection release cause value may be a cause identifier having a mapping relation to a connection release cause, e.g. the connection release cause value may comprise a value of one or more bits, different cause value values corresponding to different connection release causes.

In one embodiment, the connection release request may carry feeder link information, e.g., the carried feeder link information may be associated with the impending interruption feeder link indicated by the cause value.

In this way, the connection release request carries the feeder link information, so that network overhead generated when the feeder link information is independently sent to the first core network device can be reduced, and the connection release request can be associated, thereby being beneficial to quickly determining the feeder link which is about to be interrupted.

As shown in fig. 5, an embodiment of the present disclosure provides a communication control method, which is executed by a first core network device, including:

s150: when the feeder link is about to be interrupted, acquiring feeder link information;

S160: notifying the UE that a feeder link is about to be interrupted, and sending feeder link information to the UE through access network equipment; feeder link information is used to determine whether the UE continues to camp on the current network or access other networks.

In the embodiment of the disclosure, notifying the UE that the feeder link is about to be broken may be that a notification message indicating that the feeder link is about to be broken is sent to the UE. For example, a notification message indicating that the feeder link is about to be broken may be sent to the UE through a UE configuration update (UE configuration Update, UCU) procedure or a UE parameter update (UE Parameter Update, UPU) procedure.

In some embodiments, notifying the UE of the impending interruption of the feeder link may include:

Generating a notification message according to the UCU program or the UPU program; the notification message is used for indicating that the feeder link is about to be interrupted;

And sending a notification message to the UE through the access network equipment.

In one embodiment, the feeder link information may be sent to the UE carried in a notification message or may be sent to the UE separately from the notification message. For example, the feeder link information may be carried in a notification message and bound with identification information of the feeder link indicated by the notification message as being about to be broken.

In one embodiment, the notification message may carry an event identification, wherein the event identification may indicate that the currently occurring event is an impending interruption of the feeder link. By way of example, the event identification may be a flag bit or the like consisting of 1 or more bits. Event identifications may have binding relationships with events, with different event identifications indicating different events.

Therefore, by informing the UE that the feeder link is about to be interrupted, the UE can be facilitated to quickly know that the feeder link interruption event occurs currently, so that the efficiency of deciding whether to continue to reside in the current network or not and the efficiency of the network side equipment to execute the control operation can be improved.

As shown in fig. 6, an embodiment of the present disclosure provides a communication control method, which is executed by a first core network device, including:

s151: when the feeder link is about to be interrupted, acquiring feeder link information;

S161: notifying the UE that the feeder link is about to be interrupted, and sending feeder link information to the UE; feeder link information is used to determine whether the UE continues to camp on the current network or access other networks.

S171: receiving an acknowledgement message sent by the UE through the access network equipment;

s181: sending a first connection release instruction to access network equipment; the first connection release instruction is used for indicating to keep the RRC connection between the access network equipment and the UE, and the confirmation message carries indication information for indicating the UE to determine to continue to reside in the current network;

S191: and notifying the second core network device and/or the third core network device to start a buffer function of downlink data associated with the UE.

In the embodiment of the disclosure, the acknowledgement message sent by the UE may be an acknowledgement message sent by the UE in response to the notification message sent by the first core network device, where the acknowledgement message characterizes that the UE successfully receives the notification message. For example, when the first core network device sends the notification message through the UCU procedure or the UPU procedure, the acknowledgement message returned by the UE may also be received through the UCU procedure or the UPU procedure.

In one embodiment, when the first core network device receives the indication information carried in the acknowledgement message, it may determine that the UE chooses to continue to camp on the current network. The indication information may be information such as an instruction for instructing the UE to determine to continue to camp on the current network. At this time, a control operation related to the UE continuing to camp on the current network may be performed.

In one embodiment, the feeder link information may be feeder link information sent by the receiving access network device via a connection release request. After determining that the UE continues to reside in the current network based on the indication information carried by the acknowledgement message, a first connection release instruction may be sent to the access network device, where the first connection release instruction may be used to instruct the access network device to release an N2 connection with the first core network device, and to maintain an RRC connection between the access network device and the UE.

Here, since the UE continues to reside in the current network, after the feeder link is interrupted, the access network device may still buffer uplink transmission data associated with the UE, so that RRC connection still needs to be maintained, so that the data communication capability between the access network device and the UE is maintained. The indication to the access network device to release the N2 connection may be an indication to the access network device to release the UE context, etc.

In one embodiment, the first connection release instruction may also be used to instruct release of the N3 connection between the access network device and a third core network device, e.g. a UPF.

In one embodiment, the buffer function of the downlink data associated with the UE is started, which may be to buffer the downlink data to be transmitted associated with the UE when the feeder link is interrupted. For example, when the feeder link is interrupted, core network devices such as UPF receive downlink data associated with the UE, buffer the downlink data, and after the feeder link is restored to be connected, send the buffered downlink data to the UE through the access network.

Here, the downlink data associated with the UE may be data sent by the network to the UE.

In one embodiment, the buffering of the UE-associated downlink data may be performed by the SMF and/or UPF.

When the UE is determined to continue to reside in the current network, the N2 connection is released and the RRC connection is kept through the indication, the buffer of downlink data associated with the UE under the condition that the feeder link is interrupted is ensured, and the service is continuously forwarded after the feeder link connection is restored.

In some embodiments, the method may further comprise:

receiving an acknowledgement message sent by the UE through the access network equipment;

performing de-registration on the UE based on the received de-registration request of the UE; the confirmation message does not carry indication information for indicating the UE to determine to continue to reside in the current network;

Sending a second connection release instruction to the access network equipment; the second connection release instruction is further used for indicating to release the RRC connection between the access network equipment and the UE;

Releasing the connection with the second core network device, and notifying the second core network device and the third core network device to release the connection between the second core network device and the third core network device.

In the embodiment of the disclosure, the confirmation message does not carry indication information, for example, is only used for representing that the UE successfully receives the notification message, and then the UE is indicated not to continue to reside in the current network. For example, indicating that the UE needs to perform de-registration and select to access other available networks, or needs to switch to other available networks.

In one embodiment, a de-registration request of the UE is received, and the first core network device processes the received de-registration request, e.g., performs de-registration of the UE based on the de-registration request, where performing de-registration may be releasing a context of the UE stored in the first core network device, etc.

In one embodiment, when the second connection release instruction sent to the access network device based on the received de-registration request of the UE instructs the access network device to release the N2 connection, and releases the RRC connection between the access network device and the UE.

Here, since the UE does not continue to reside in the current network, after the feeder link is interrupted, the access network device does not need to buffer and forward the transmission data associated with the UE, so that the RRC connection does not need to be kept continuously, and thus the RRC connection can be instructed to be released. The indication of the access network device to release the N2 connection may be an indication of the access network device to release the saved UE context, etc.

In one embodiment, the second connection release instruction may also be used to instruct to release the N3 connection between the access network device and a third core network device, e.g. a UPF.

In one embodiment, releasing the connection with the second core network device and notifying the second core network device and the third core network device to release the connection between the second core network device and the third core network device may include: releasing the connection between the first core network device and the second core network device, e.g. releasing the connection between the AMF and the SMF, and informing the second core network device and the third core network device to release the connection between the second core network device and the third core network device, e.g. informing the SMF and the UPF to release the N4 connection between the SMF and the UPF.

In some embodiments, the first core network device is an access and mobility management function AMF; the second core network equipment is a session management function SMF; the third core network device is a user plane function UPF.

As shown in fig. 7, an embodiment of the present disclosure provides a communication control method, which is performed by a UE, the method including:

S210: when the feeder link is about to be interrupted, receiving feeder link information;

S220: and determining to continue to reside in the current network or access other networks according to the feeder link information.

In the embodiment of the present disclosure, the feeder link information may indicate at least one of a feeder link status, a parameter, an access network device status of the feeder link connection, an operating parameter, and the like. For example, feeder link information may be used to determine at least one of the following: the method comprises the steps of establishing a feeder link, establishing time, interrupting time and interrupting time.

In one embodiment, the feeder link information may be feeder link information carried by a notification message sent by the first core network device and received by the access network device, for example, sent by the first core network device and received by the access network device. Wherein the notification message may be used to indicate that the feeder link is about to be broken.

In one embodiment, the impending interruption of the feeder link may be detected or received by a notification message sent by the first core network device indicating that the feeder link is impending interruption, for example, the notification message may be a notification message sent by a UCU procedure or a UPU procedure, etc.

In one embodiment, the feeder link information may be carried in a notification indicating that the feeder link is about to be broken. For example, when a notification message indicating that the feeder link is about to be interrupted is received, feeder link information sent by the access network device is acquired in the notification message.

In one embodiment, the feeder link information is used for the UE to decide whether to continue camping on the current network when the feeder link is about to break. For example, continuing to camp on the current network may include maintaining an RRC connection between the UE and the access network device, and may further include the access network device, the second core network device, or the third core network device buffering transmission data associated with the UE. The second core network device may be an SMF, and the third core network device may be a UPF.

In one embodiment, the other network may be accessed by initiating a registration request to the first core network device corresponding to the current network, completing the registration through the current satellite access network, and selecting other available networks to initiate registration, or may be accessed by switching to other available networks.

In this way, by receiving the feeder link information, it can be decided whether the UE remains to reside in the network or chooses to access other available networks in the case of a feeder link outage, thereby improving flexibility of communication control and reducing network overhead.

In some embodiments, determining to continue to camp on the current network or to access other networks based on the feeder link information includes:

when feeder link information sent by first core network equipment is received through access network equipment, acquiring a feeder link interruption time indicated by the feeder link information;

and determining that the UE continues to reside in the current network or is accessed to other networks according to the interruption time length and the current service type of the UE.

In the embodiment of the present disclosure, the feeder link interruption duration may be indicated by feeder link information sent by the first core network device, or may be directly sent by the first core network device.

In one embodiment, determining that the UE continues to camp on the current network or access other networks according to the outage duration and the current service type of the UE may be determining that the UE continues to camp on the current network or access other networks according to the outage duration and the current service type of the UE.

In one embodiment, the service currently developed by the UE is a non-real-time service, and it may be determined that the UE continues to camp on the current network; the service currently developed by the UE is a real-time service, and it may be determined that the UE selects to access other networks, etc.

In one embodiment, if the maximum time delay allowed by the current service type of the UE is greater than a first threshold and the feeder link interruption duration is less than the maximum time delay, it may be determined that the UE continues to reside in the current network; and if the maximum time delay allowed by the current service type of the UE is smaller than or equal to a first threshold value and/or the feeder link interruption time length is larger than or equal to a second threshold value, determining that the UE selects to access other networks and the like. Wherein the second threshold is greater than the first threshold.

In one embodiment, determining that the UE continues to camp on the current network or access other networks according to the outage duration and the current service type of the UE may include: and determining that the UE continues to reside in the current network or is accessed to other networks according to the interruption time length, the current service type of the UE and the type of the UE.

In some embodiments, the method may further comprise:

Receiving a notification message sent by first core network equipment through access network equipment; the notification message is used for indicating that the feeder link is about to be interrupted;

and when the UE is determined to continue to reside in the current network, returning a confirmation message carrying indication information for indicating the UE to determine to continue to reside in the current network.

In the embodiment of the present disclosure, the acknowledgement message returned by the UE may be an acknowledgement message indicating that the UE successfully receives the notification message, which is returned by the UE in response to the notification message sent by the first core network device. For example, when the first core network device sends the notification message through the UCU procedure or the UPU procedure, the acknowledgement message returned by the UE may also be received through the UCU procedure or the UPU procedure.

In one embodiment, when the UE determines to continue to camp on the current network, the returned acknowledgement message may carry indication information, where the indication information may be information such as an instruction for instructing the UE to determine to camp on the current network. At this time, the liquid crystal display device, may be used to instruct the first core network device to perform control operations related to the UE continuing to camp on the current network.

In some embodiments, the method may further comprise:

when the UE is determined to select to access other networks, a confirmation message is returned through the access network equipment, and a registration request is sent to the first core network equipment;

And when the deregistration is completed, selecting other radio access networks and core networks supporting the access of the UE and initiating the registration.

In one embodiment, when the UE determines to access other networks, the returned acknowledgement message may not carry indication information, e.g., the acknowledgement message is only used to characterize that the UE successfully receives the notification message.

In one embodiment, when the UE determines to access other networks, the returned acknowledgement message may carry indication information indicating to access other networks. For example, it may indicate that the UE chooses to access other networks, etc. At this time, the method may be used to instruct the first core network device to perform a control operation related to the UE selecting to access other networks.

In some embodiments, the method may further comprise:

And switching to a radio access network and a core network which are different from the current satellite access network and support the UE access when the UE is determined to select to access other networks.

Here, the handover to the radio access network and the core network supporting the UE access, which are different from the current access network, may be to transmit UE context information to other radio access networks and core networks different from the current network, and handover to the connection of the other radio access networks and core networks.

In some embodiments, the feeder link information received by the UE may also be feeder link information sent by the access network device through a broadcast message, or feeder link information indicated in a feeder link outage event notified by the access network device through a broadcast message.

As shown in fig. 8, an embodiment of the present disclosure provides a communication control method, which is performed by an access network device, and includes:

S310: and when the feeder link is detected to be about to break, sending feeder link information, wherein the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.

In embodiments of the present disclosure, the access network device may detect a status of the feeder link, e.g., determine whether the feeder link is about to break based on status information of the feeder link. And sending feeder link information when the detected feeder link is about to be interrupted, for example, sending the feeder link information to the first core network device through an N2 connection release request.

In one embodiment, the access network device may send feeder link information to the UE via a broadcast message, e.g., notify the UE of the feeder link disruption event carrying the feeder link information via a broadcast message, etc.

In some embodiments, sending feeder link information to the first core network device may include:

transmitting feeder link information to the first core network device through a connection release request;

The method may further comprise:

When a first connection release instruction sent by first core network equipment is received, N2 connection between the first core network equipment and the first core network equipment is released, and RRC connection between the first core network equipment and the UE is maintained; the first connection release instruction is an instruction sent by the first core network device when the UE determines to continue to camp on the current network.

In some embodiments, the method may further comprise:

When the feeder link is interrupted, caching uplink data associated with the UE;

And when the feeder link resumes connection, sending the cached uplink data.

In the embodiments of the present disclosure, upon interruption of the feeder link, the access network device may buffer uplink data associated with the UE, for example, for uplink data transmitted by the UE, the access network device may buffer the uplink data when the feeder link is interrupted. And retransmitting the uplink data buffered during the interruption when the feeder link resumes the connection.

In one embodiment, the method may further comprise: and discarding the cached uplink data associated with the UE when the feeder link is not recovered to be connected after the feeder link interruption time indicated by the feeder link information from the feeder link interruption starting time.

In some embodiments, the method may further comprise:

When a second connection release instruction sent by the first core network equipment is received, releasing N2 connection with the first core network equipment and RRC connection with the UE; the second connection release instruction is an instruction sent by the first core network device when the UE determines to access other networks.

The embodiment of the disclosure provides a UE access processing method in a discontinuous connection state of a feeder link, which may include:

The network device informs the UE of the feeder link disruption event through a notification message, which may further include: feeder link interruption duration. Wherein the network device may be an access network device, and the access network device may notify the interrupt event through a broadcast message or the like. Or the network device may also be a first core network device (e.g. AMF) that receives notification of a feeder link outage from the access network device, e.g. may also include feeder link information. The first core network device notifies the UE of the feeder link interruption through a UCU or UPU procedure.

The UE decides to continue camping on the current network or deregister from the current access network, select and access to other available networks based on the notified feeder link disruption event.

Here, the decision process of the UE may also be based on information such as a terminal type and/or a service type (e.g., delay tolerance).

If the UE chooses to continue to reside in the current network, the UE normally develops a service, and during the interruption of the feeder link, network side equipment (at least one of gNB, SMF and UPF) caches service transmission data associated with the UE; when the connection resumes sending buffered data.

Scheme one, as shown in fig. 9:

1. The access network device detects that the feeder link between the satellite and the ground station is about to break.

2. The access network equipment initiates an N2 connection release request, indicates that a feeder link is about to be interrupted in the request, and simultaneously sends feeder link information or connection interruption time length to the first core network equipment.

3. The first core network equipment initiates UCU program to UE, informs UE that feeder link is about to break, and sends break time to UE.

And 4, the UE decides to continue to reside in the current network according to the notification of the feeder link interruption, the interruption time length, the requirement of the service developed by the UE on time delay and the like.

In a return message of the UCU procedure, the UE is instructed to remain camped on the current network during the feeder link disruption.

6. The first core network equipment returns an N2 connection release instruction to the access network equipment. According to step 5, the returned N2 connection release instruction includes indication information for reserving RRC connection.

7. The access network equipment receives the N2 connection release instruction, and if the instruction information for reserving the RRC connection is carried, the RRC connection release is not initiated. The access network device releases the N2 and N3 connections and returns an N2 connection release complete message to the first core network device.

8. The first core network device informs the SMF and/or UPF to perform downlink data caching.

9. When the feeder link is interrupted, when the uplink data sent by the UE arrives at the access network equipment, the access network equipment caches the uplink data; and when the SMF and/or UPF receives the downlink data of the UE, caching the downlink data. And when the feeder link connection is restored, the access network equipment transmits the cached uplink data, and the SMF and/or the UPF transmits the cached downlink data.

Scheme 2, as shown in fig. 10:

And 4, the UE decides whether to access other networks according to the notification of the feeder link interruption, the interruption time length, the requirement of the service developed by the UE on time delay and the like. If the service developed by the UE has higher requirement on time delay, the UE selects to register from the current network when the feeder link is interrupted, selects to access other available network and initiates registration.

And 5, the UE sends a UCU return confirmation message.

The ue initiates a de-registration request.

7. When the first core network equipment receives the UE deregistration request, the deregistration request is processed, and an N2 connection release instruction is sent to the access network equipment.

8. If the N2 connection release instruction does not carry indication information for reserving the RRC connection, the access network equipment initiates an RRC connection release process.

9. The access network device releases the N2 and N3 connections and returns an N2 connection release complete message to the first core network device.

AMF complete and SMF, SMF and UPF connection release.

And the UE selects other available networks to finish the access registration process.

The disclosed embodiments provide a communication system including: the system comprises first core network equipment, UE and access network equipment;

The first core network device is used for receiving feeder link information sent by the access network device; when the feeder link is about to break, notifying the UE that the feeder link is about to break, and sending the feeder link information to the UE through the access network equipment; the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks;

And the access network equipment is used for sending the feeder link information when the feeder link is detected to be interrupted.

In some embodiments, the first core network device is configured to receive feeder link information sent by the access network device through a connection release request; the connection release request is used to indicate that the feeder link is about to break.

In some embodiments, the first core network device is configured to generate the notification message according to a UCU procedure or a UPU procedure; the notification message is used for indicating that the feeder link is about to be interrupted; and sending a notification message to the UE through the access network equipment.

In some embodiments, the first core network device is further configured to receive, by the access network device, an acknowledgement message sent by the UE; sending a first connection release instruction to access network equipment; the first connection release instruction is used for indicating to keep the RRC connection between the access network equipment and the UE, and the confirmation message carries indication information for indicating the UE to determine to continue to reside in the current network; and notifying the second core network device and/or the third core network device to start a buffer function of downlink data associated with the UE.

In some embodiments, the first core network device is further configured to receive, by the access network device, an acknowledgement message sent by the UE; performing de-registration on the UE based on the received de-registration request of the UE; the confirmation message does not carry indication information for indicating the UE to determine to continue to reside in the current network; sending a second connection release instruction to the access network equipment; the second connection release instruction is further used for indicating to release the RRC connection between the access network equipment and the UE; releasing the connection with the second core network device, and notifying the second core network device and the third core network device to release the connection between the second core network device and the third core network device.

In some embodiments, the first core network device is an access and mobility management function AMF, the second core network device is a session management function SMF, and the third core network device is a user plane function UPF.

In some embodiments of the present invention, in some embodiments, the UE is configured to upon receiving feeder link information sent by the first core network device via the access network device, acquiring feeder link information indications a feeder link interruption duration of (a); and determining that the UE continues to reside in the current network or is accessed to other networks according to the interruption time length and the current service type of the UE.

In some embodiments, the UE is configured to receive, by the access network device, a notification message sent by the first core network device; the notification message is used for indicating that the feeder link is about to be interrupted; and when the UE is determined to continue to reside in the current network, returning a confirmation message carrying indication information for indicating the UE to determine to continue to reside in the current network through the access network equipment.

In some embodiments, the UE is configured to receive, by the access network device, a notification message sent by the first core network device; the notification message is used for indicating that the feeder link is about to be interrupted; when determining that the UE accesses other networks, returning a confirmation message through the access network equipment and sending a registration request to the first core network equipment; and when the deregistration is completed, selecting other radio access networks and core networks supporting the access of the UE and initiating the registration.

In some embodiments, the UE is configured to receive, by the access network device, a notification message sent by the first core network device; the notification message is used for indicating that the feeder link is about to be interrupted; and when the UE is determined to access other networks, initiating switching to other radio access networks and core networks supporting the UE access.

In some embodiments, the UE is configured to receive feeder link information sent by the access network device via a broadcast message.

In some embodiments, the access network device is configured to send feeder link information to the first core network device via a connection release request; when a first connection release instruction sent by first core network equipment is received, releasing connection with the first core network equipment and maintaining RRC connection with UE; the first connection release instruction is an instruction sent by the first core network device when the UE determines to continue to camp on the current network.

In some embodiments, the access network device is further configured to: when the feeder link is interrupted, caching uplink data associated with the UE; and when the feeder link resumes connection, sending the cached uplink data.

In some embodiments, the access network device is further configured to: when a second connection release instruction sent by the first core network equipment is received, releasing the connection with the first core network equipment and releasing the RRC connection with the UE; the second connection release instruction is an instruction sent by the first core network device when the UE determines to access other networks.

In some embodiments, the access network device is configured to send feeder link information to the UE via a broadcast message.

As shown in fig. 11, an embodiment of the present disclosure provides a communication control apparatus including:

A receiving unit 110, configured to obtain feeder link information when a feeder link is about to be interrupted;

And the sending unit 120 is configured to send feeder link information to the UE, where the feeder link information is used to determine that the UE continues to reside in the current network or access other networks.

In some embodiments, the receiving unit 110 is configured to:

and receiving feeder link information sent by the access network equipment.

In some embodiments, the receiving unit 110 is configured to:

receiving feeder link information sent by access network equipment through a connection release request; the connection release request is used to indicate that the feeder link is about to break.

In some embodiments, the sending unit 120 is further configured to:

And notifying the UE that the feeder link is about to be interrupted.

In some embodiments, the sending unit 120 is configured to:

generating a notification message according to the UE configuration update UCU program or the UE parameter update UPU program; the notification message is used for indicating that the feeder link is about to be interrupted;

In some embodiments, the sending unit 120 is further configured to:

Sending a first connection release instruction to access network equipment; the first connection release instruction is further used for indicating to maintain radio resource control RRC connection between the access network device and the UE, and the acknowledgement message carries indication information indicating that the UE determines to continue to camp on the current network;

and notifying the second core network device and/or the third core network device to start a buffer function of downlink data associated with the UE.

In some embodiments, the sending unit 120 is further configured to:

As shown in fig. 12, an embodiment of the present disclosure provides a communication control apparatus including:

a receiving unit 210, configured to receive feeder link information when the feeder link is about to be interrupted;

the processing unit 220 is configured to determine to continue to reside in the current network or access other networks according to the feeder link information.

In some embodiments, the processing unit 220 is to:

In some embodiments, the processing unit 220 is further configured to:

And when the UE is determined to continue to reside in the current network, returning a confirmation message carrying indication information for indicating the UE to determine to continue to reside in the current network through the access network equipment.

In some embodiments, the processing unit 220 is further configured to:

When determining that the UE accesses other networks, returning a confirmation message through the access network equipment and sending a registration request to the first core network equipment;

In some embodiments, the processing unit 220 is further configured to:

And when the UE is determined to access other networks, initiating switching to other radio access networks and core networks supporting the UE access.

In some embodiments, the receiving unit 210 is configured to:

and receiving feeder link information sent by the access network equipment through the broadcast message.

As shown in fig. 13, an embodiment of the present disclosure provides a communication control apparatus including:

and a sending unit 310, configured to send feeder link information when it is detected that the feeder link is about to break, where the feeder link information is used to determine that the UE continues to reside in the current network or accesses other networks.

In some embodiments, the sending unit 310 is configured to:

When a first connection release instruction sent by first core network equipment is received, releasing connection with the first core network equipment and maintaining RRC connection with UE; the first connection release instruction is an instruction sent by the first core network device when the UE determines to continue to camp on the current network.

In some embodiments, the sending unit 310 is further configured to:

And when the feeder link resumes connection, sending the cached uplink data.

In some embodiments, the sending unit 310 is further configured to:

When a second connection release instruction sent by the first core network equipment is received, releasing the connection with the first core network equipment and releasing the RRC connection with the UE; the second connection release instruction is an instruction sent by the first core network device when the UE determines to access other networks.

In some embodiments, the sending unit 310 is configured to:

And sending feeder link information to the UE through a broadcast message.

The embodiment of the disclosure provides a communication device, comprising:

A memory for storing processor-executable instructions;

the processor is connected with the memories respectively;

wherein the processor is configured to execute the communication control method provided by any of the foregoing technical solutions.

The processor may include various types of storage medium, which are non-transitory computer storage media, capable of continuing to memorize information stored thereon after a power down of the communication device.

Here, the communication apparatus includes: a terminal or a network element, which may be any one of the first to fourth network elements.

The processor may be coupled to the memory via a bus or the like for reading an executable program stored on the memory, for example, at least one of the methods shown in fig. 2, 4-10.

Fig. 14 is a block diagram of a terminal 800, according to an example embodiment. For example, terminal 800 may be a mobile phone, computer, digital broadcast user equipment, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 14, the terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to generate all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the terminal 800. Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the terminal 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal 800.

The multimedia component 808 includes a screen between the terminal 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the terminal 800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the terminal 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the components, such as a display and keypad of the terminal 800, the sensor assembly 814 may also detect a change in position of the terminal 800 or a component of the terminal 800, the presence or absence of user contact with the terminal 800, an orientation or acceleration/deceleration of the terminal 800, and a change in temperature of the terminal 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the terminal 800 and other devices, either wired or wireless. The terminal 800 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal 800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of terminal 800 to generate the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

As shown in fig. 15, an embodiment of the present disclosure shows a structure of a communication device 900. For example, the communication device 900 may be provided as a network-side device. The communication device 900 may be a base station as described above.

Referring to fig. 15, communication device 900 includes a processing component 922 that further includes one or more processors and memory resources represented by memory 932 for storing instructions, such as application programs, executable by processing component 922. The application programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, processing component 922 is configured to execute instructions to perform any of the methods described above as applied to the base station, e.g., at least one of the methods shown in fig. 2, 4-10.

The communication device 900 may also include a power supply component 926 configured to perform power management of the communication device 900, a wired or wireless network interface 950 configured to connect the communication device 900 to a network, and an input output (I/O) interface 958. The communication device 900 may operate based on an operating system stored in the memory 932, such as Windows Server TM, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

A communication control method, wherein the method is performed by a first core network device, the method comprising:

when the feeder link is about to be interrupted, acquiring feeder link information;

And sending the feeder link information to User Equipment (UE) through access network equipment, wherein the feeder link information is used for determining that the UE continues to reside in a current network or is accessed to other networks.
The method of claim 1, wherein the obtaining feeder link information comprises:

and receiving feeder link information sent by the access network equipment.
The method of claim 2, wherein the receiving feeder link information sent by the access network device comprises:

receiving feeder link information sent by the access network equipment through a connection release request; the connection release request is used to indicate that the feeder link is about to be broken.
The method of claim 1, wherein the method further comprises:

and notifying the UE that the feeder link is about to be interrupted.
The method of claim 4, wherein the informing the UE that the feeder link is about to be broken comprises:

Generating a notification message according to the UE configuration update UCU program or the UE parameter update UPU program; the notification message is used for indicating that the feeder link is about to be interrupted;

and sending the notification message to the UE through the access network equipment.
The method of claim 4, wherein the method further comprises:

receiving an acknowledgement message sent by the UE through the access network equipment;

sending a first connection release instruction to the access network equipment; the first connection release instruction is used for indicating to keep radio resource control RRC connection between the access network device and the UE, and the acknowledgement message carries indication information indicating that the UE determines to continue to camp on a current network;

And notifying the second core network equipment and/or the third core network equipment to start a buffer function of downlink data associated with the UE.
The method of claim 4, wherein the method further comprises:

receiving an acknowledgement message sent by the UE through the access network equipment;

Performing de-registration on the UE based on the received de-registration request of the UE; the confirmation message does not carry indication information for indicating the UE to determine to continue to reside in the current network;

Sending a second connection release instruction to the access network equipment; the second connection release instruction is further configured to instruct release of RRC connection between the access network device and the UE;

Releasing the connection with the second core network device, and notifying the second core network device and the third core network device to release the connection between the second core network device and the third core network device.
The method according to claim 6 or 7, wherein the first core network device is an access and mobility management function, AMF, the second core network device is a session management function, SMF, and the third core network device is a user plane function, UPF.
A communication control method, wherein the method is performed by a user equipment, UE, the method comprising:

when the feeder link is about to be interrupted, receiving feeder link information;

and determining to continue to reside in the current network or access other networks according to the feeder link information.
The method of claim 9, wherein the determining to continue to camp on a current network or access other networks based on the feeder link information comprises:

when feeder link information sent by first core network equipment is received through access network equipment, acquiring a feeder link interruption time indicated by the feeder link information;

And determining that the UE continues to reside in the current network or is accessed to other networks according to the interruption time length and the current service type of the UE.
The method of claim 10, wherein the method further comprises:

Receiving a notification message sent by the first core network device through the access network device; the notification message is used for indicating that the feeder link is about to be interrupted;

And when the UE is determined to continue to reside in the current network, returning a confirmation message carrying indication information for indicating the UE to determine to continue to reside in the current network through the access network equipment.
The method of claim 10, wherein the method further comprises:

Receiving a notification message sent by the first core network device through the access network device; the notification message is used for indicating that the feeder link is about to be interrupted;

when the UE is determined to access other networks, a confirmation message is returned through the access network equipment and a registration request is sent to the first core network equipment;

and when the de-registration is completed, selecting other wireless access networks and core networks supporting the access of the UE and initiating the registration.
The method of claim 10, wherein the method further comprises:

Receiving a notification message sent by the first core network device through the access network device; the notification message is used for indicating that the feeder link is about to be interrupted;

And when the UE is determined to access other networks, initiating switching to other wireless access networks and core networks supporting the UE access.
The method of claim 9, wherein the receiving feeder link information comprises:

and receiving feeder link information sent by the access network equipment through the broadcast message.
A communication control method, wherein the method is performed by an access network device, the method comprising:

and when the feeder link is detected to be interrupted, sending feeder link information, wherein the feeder link information is used for determining that the User Equipment (UE) continues to reside in the current network or is accessed to other networks.
The method of claim 15, wherein the transmitting feeder link information comprises:

transmitting feeder link information to the first core network device through a connection release request;

The method further comprises the steps of:

When a first connection release instruction sent by first core network equipment is received, releasing connection with the first core network equipment and maintaining RRC connection with the UE; the first connection release instruction is an instruction sent by the first core network device when the UE determines to continue to reside in the current network.
The method of claim 16, wherein the method further comprises:

Caching uplink data associated with the UE when the feeder link is interrupted;

and when the feeder link resumes connection, sending the cached uplink data.
The method of claim 16, wherein the method further comprises:

When a second connection release instruction sent by the first core network equipment is received, releasing the connection with the first core network equipment and releasing the RRC connection with the UE; the second connection release instruction is an instruction sent by the first core network device when the UE determines to access other networks.
The method of claim 15, wherein the transmitting feeder link information comprises:

And sending feeder link information to the UE through a broadcast message.
A communication system, wherein the system comprises: the system comprises first core network equipment, user Equipment (UE) and access network equipment;

The first core network device is configured to receive feeder link information sent by the access network device; when a feeder link is about to break, notifying UE that the feeder link is about to break, and sending the feeder link information to the UE through the access network equipment; the feeder link information is used for determining that the UE continues to reside in a current network or is accessed to other networks;

The UE is used for receiving feeder link information sent by the first core network equipment through the access network equipment when the feeder link is about to be interrupted, and determining to continue to reside in the current network or access other networks according to the received feeder link information;

The access network device is used for sending feeder link information when the interruption of the feeder link is detected.
A communication control apparatus, wherein the apparatus comprises:

The receiving unit is used for acquiring feeder link information when the feeder link is about to be interrupted;

And the sending unit is used for sending the feeder link information to the UE, and the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.
A communication control apparatus, wherein the apparatus comprises:

the receiving unit is used for receiving feeder link information when the feeder link is about to be interrupted;

And the processing unit is used for determining to continue to reside in the current network or access other networks according to the feeder link information.
A communication control apparatus, wherein the apparatus comprises:

and the sending unit is used for sending feeder link information when the detection of the impending interruption of the feeder link is detected, wherein the feeder link information is used for determining that the UE continues to reside in the current network or is accessed to other networks.
A communication device comprising a processor, a memory and an executable program stored on the memory and capable of being run by the processor, wherein the processor performs the method provided in any one of claims 1 to 8 or 9 to 14 or 15 to 19 when the executable program is run by the processor.
A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method as provided in any one of claims 1 to 8 or 9 to 14 or 15 to 19.